Service Mower
Removing Mower
1. Park machine safely. (See Parking Safely in the Safety section.)
2. Allow engine and muffler to cool completely.
3. Adjust mower cutting height to lowest position.
4. Put wood blocks under each side of mower deck.
c CAUTION: Avoid injury! Lift pedal is spring-assisted and may have unexpected movement.
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NOTE: Because a lift assist is installed on your machine, you may need to lower deck and then pull lift pedal back by hand to lock the lift lever.
5. Lower mower deck onto blocks, pull back lift pedal by hand, and pull lift pedal lever to lock.
6. Remove nuts and spacers (A) and belt covers (B) from left side of deck.
Picture Note: Mower engagement rod is located on left side of mower deck.
Picture Note: Close-up of mower engagement rod and adjustment pin.
7. Remove spring locking pin and washer (C) from adjustment pin (D) on end of mower engagement rod (E).
8. Remove adjustment pin from hole in arm (F) and place mower engagement rod on mower deck.
9. Loosen screw (G) and remove nut (H) on sheave to loosen belt guide.
10. Remove belt from guides and sheaves.
11. Pull belt down from engine drive sheave (I) to remove belt from sheave (I) and belt guides (J).
12. Remove spring locking pin (K) from front draft rod (L).
13. Remove front draft rod from hole in machine bracket (M) and from mower bracket (N).
14. Pull and rotate J-pin (O) to release and move rear draft arm (P) away from deck bracket (Q). Repeat on other side.
15. Raise draft arms to transport position:
a. Pull and hold lift pedal by hand.
c. Hold lift pedal and allow it to move forward.
d. Pull up latch handle to lock draft arms in transport position.
16. Push deck slightly forward to allow mower chute to drop from rear of machine.
17. Remove wood blocks from both sides of machine.
18. Hold discharge chute down and slide mower out from under the machine.
Installing Mower
1. Park machine safely. (See Parking Safely in the Safety section.)
2. Allow engine and muffler to cool completely.
3. Adjust mower cutting height to lowest position.
4. Slide mower deck, guide wheels in front, under tractor and line up deck bracket (A) with draft arm (B).
5. Align mower discharge chute with rear opening in machine. Mower chute should fit inside of machine chute.
6. Put wood blocks under each side of mower deck.
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c CAUTION: Avoid injury! Lift pedal is spring-assisted and may have unexpected movement.
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8. Pull lift pedal by hand to lower draft arms. Hold pedal securely and lock lift latch handle.
9. Pull back J-pin (C) and insert through deck bracket (A) and draft arm (B). Make sure pin installs completely through deck bracket. Repeat for other side.
10. Install front draft rod (D) into mower bracket (E) and then into hole in machine bracket (F). Make sure nut and rounded bushing are on front side of machine bracket.
11. Install spring locking pin (G) with loop of pin hanging down.
IMPORTANT: Avoid damage! The belt will be damaged if installed wrong. Route the belt properly through belt guides. See belt routing label on mower deck. |
12. Put mower drive belt on engine drive sheave (H).
13. Route belt through each belt guide (I).
14. Put belt on front sheaves (J) and route through belt guides.
15. Install and tighten nut (K) and screw (L) to secure belt guides.
16. Follow belt routing shown above. (Label is also located on left side of deck.) Route belt around all sheaves and inside all belt guides.
17. Remove wood blocks from both sides of mower.
IMPORTANT: Avoid damage! If the mower engagement rod is not adjusted properly, the mower belt may slip or drag on blade sheave resulting in belt damage. |
· Mower is at lowest possible cutting height.
· Mower is at mowing position.
· Mower engagement lever is pulled back into stop position.
· Gauge wheels are not touching the ground.
18. Push mower engagement rod (M) until tight and sheaves near rod do not move.
19. Align adjustment pin (N) on end of mower engagement rod (N) with hole in arm (O).
20. If pin does not line up, loosen lock nut (P) and turn pin until pin slips freely into hole. Tighten lock nut.
21. Insert adjustment pin into hole in arm.
22. Install washer and spring locking pin (Q) to fasten adjustment pin to arm.
23. Install belt covers (R) on left side of deck and secure with spacers and nuts (S).
Replacing Mower Drive Belt
1. Park machine safely. (See Parking Safely in Safety section.)
2. Allow engine and muffler to cool completely.
4. Loosen nut (A) on idler sheave and on flat idler.
6. Install belt on mower deck as shown.
7. Align bracket (B) by inserting locator into hole on deck bracket.
8. Tighten nut (A) on idler sheave and on flat idler.
9. Install mower deck and adjust mower engagement rod, if necessary.
Adjusting Mower Deck Timing Belt
IMPORTANT: Avoid damage! Damage may occur to the belt or blades after a major blade impact: |
1. Park machine safely. (See Parking Safely in the Safety section).
2. Allow engine and muffler to cool completely.
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c CAUTION: Avoid injury! Mower blades are sharp. Always wear gloves when handling mower blades or working near blades.
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NOTE: If blades are not positioned at 90° as shown below, belt damage may have occurred. Replace timing belt.
Picture Note: Blades shown in correct (timed) position, 90° from each other.
4. Position mower blades (A) and (B) 90° from each other.
5. Remove three cap screws and washers (C) and remove cover (D).
6. Loosen two idler nuts (E) and then finger tighten.
Picture Note: End of spring, not washer, aligns with end of bracket
7. Rotate adjusting nut (F) clockwise until end of tensioning spring (G) aligns with end of tensioner bracket (H).
8. Turn blades several rotations to make sure that belt is riding properly in sprockets and idlers.
9. Place a screwdriver in slot (I) and rotate the belt guide underneath clockwise until guide contacts belt, and then rotate counterclockwise 1/8 turn.
10. Tighten idler nuts (E) to 30 N·m (22 lb-ft).
11. Install cover (D) using three cap screws and washers (C).
12. Install mower deck and adjust mower engagement rod, if necessary.
Replacing Mower Deck Timing Belt
1. Park machine safely. (See Parking Safely in the Safety Section).
2. Allow engine and muffler to cool completely.
5. Remove three cap screws and washers (A) and remove cover (B).
6. Remove adjusting nut and washer (C), two nuts (D) and idler arm (E).
7. Remove two idler nuts (F) and upper idler arm (G).
8. Block mower blade with a piece of wood to prevent it from spinning.
9. Remove nut (H) and drive sheave (I) and then hand tighten nut onto blade spindle (J) to prevent spindle shaft from dropping.
10. Remove two belt keepers (K) from left sprocket.
11. Remove belt keeper (L) and belt guide (M) from right sprocket.
12. Remove damaged mower deck timing belt.
13. Put new timing belt around left sprocket (N) making sure teeth of belt are fully engaged in teeth of sprocket.
14. Hold belt in position and install two belt keepers (K), one on each side of left sprocket.
15. Route belt around center idlers as shown, install center bracket (G) and fasten with two nuts (F). Tighten nuts.
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c CAUTION: Avoid injury! Mower blades are sharp. Always wear gloves when handling mower blades or working near blades.
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16. Position mower blades (O) and (P) 90° from each other.
17. Route belt around right idlers and right sprocket (Q) as shown making sure teeth of belt are fully engaged in teeth of sprocket.
18. Install belt keeper (L) and belt guide (M) on right sprocket.
IMPORTANT: Avoid damage! Belt and blade damage may occur from an incorrectly installed drive sheave. Align drive sheave properly with blade spindle before tightening sheave hardware. |
19. Move idler arm to raise brake and install drive sheave on left blade spindle:
a. Align groove (R) in drive sheave with key (S) in left blade spindle.
b. Install nut (H) on blade spindle (J) and tighten to 145 N·m (107 lb-ft).
20. Put end of idler arm (E) through hook of tensioning rod (T) and fasten to right idlers with two nuts (D). Make sure belt guide (M) underneath idler arm is engaged in hole (U) of idler arm. Do not tighten nuts.
21. Check that blades are still timed (90° from each other). If necessary, remove belt keeper (L), adjust belt timing and reinstall belt keeper.
22. Compress idler arm at position (V) against strap (W) to allow installation of adjusting nut and washer.
23. Install adjusting nut and washer on end of tensioning rod.
24. Adjust tension on timing belt:
Picture Note: End of spring, not washer, aligns with end of bracket
a. Rotate adjusting nut (C) clockwise until end of tensioning spring (X) aligns with end of tensioner assembly bracket (Y).
b. Turn blades several rotations and observe that belt is riding properly in sprockets and idlers.
c. Put a screwdriver in slot (Z) and rotate belt guide (M) underneath arm clockwise until guide contacts belt and then counterclockwise 1/8 turn.
25. Tighten idler nuts (D) to 30 N·m (22 lb-ft).
26. Check that blades are still timed (90° from each other). If not, adjust mower deck timing belt.
27. Install cover (B) using three cap screws and washers (A).
28. Install mower deck and adjust mower engagement rod, if necessary.
Adjusting Spindle Brake
1. Park machine safely. (See Parking safely in the Safety section.)
2. Adjust cutting height control to lowest position.
4. Push mower engagement lever forward.
5. Remove rear drive belt cover.
6. Measure the minimum distance between brake pad (A) and spindle sheave (B). Brake pad to spindle sheave distance should be 1.0 - 1.5 mm (0.039 - 0.059 in.).
· Turn adjusting nut (C) clockwise to move brake pad (A) away from spindle sheave (B).
· Turn adjusting nut (C) counterclockwise to move brake pad (A) toward spindle sheave (B).
7. Raise deck to highest (transport) position.
8. Check that brake pad does not touch spindle sheave. Adjust as needed.
Checking for Bent Mower Blades
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c CAUTION: Avoid injury! Mower blades are sharp. Always wear gloves when handling mower blades or working near blades.
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1. Park machine safely. (See Parking Safely in the SAFETY section.)
2. Raise mower deck to highest position to access blades.
Picture Note: Mower deck with side discharge used for illustration
3. Measure distance (A) between blade tip and flat ground surface.
4. Rotate blade 180° and measure distance between other blade tip and flat ground surface.
5. Install new blade if the difference between the two measurements is more than 3 mm (1/8 in.).
Servicing Mower Blades
Removing Mower Blades
1. Park machine safely. (See Parking Safely in the Safety section.)
2. Raise mower deck to gain access to mower blades. If necessary, remove mower deck.
3. Hold mower blade with glove to prevent blade from rotating.
4. Loosen and remove bolt with washer (A), and blade (B).
5. Inspect blades; sharpen, balance or replace blades as necessary.
Installing Mower Blades
1. Check mower to be sure you are installing the blades on the correct side. Right and left sides are marked on rear draft brackets of mower deck.
· There are direction arrows located on each outside edge of the mower. There is a right and a left side blade. The blades are marked for identification.
2. Check that deflector cup (A) is properly seated between mower spindle and blade (B).
3. Position mower blade (B), with the cutting edge towards the ground, onto the mower spindle and align key on bottom of spindle with slot in blade.
4. Install and hand tighten bolt with washer (C) until mower blade is in full contact with spindle.
5. Hold mower blade with glove to prevent rotating and tighten bolts to 57 N·m (42 lb-ft.).
6. Check mower deck timing and adjust if necessary.
Sharpening Blades
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c CAUTION: Avoid injury! Mower blades are dangerous!
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· Sharpen blades with grinder, hand file, or electric blade sharpener.
· Keep original bevel (A) when grinding.
· Blade should have 0.40 mm (1/64 in.) cutting edge (B) or less.
· Balance blades before installing.
Balancing Blades
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c CAUTION: Avoid injury! Mower blades are sharp. Always wear gloves when handling mower blades or working near blades.
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2. Put blade on nail in a vise. Turn blade to horizontal position.
3. Check balance. If blade is not balanced, heavy end of blade will drop.
4. Grind bevel of heavy end. Do not change blade bevel.
Removing Grass Collector
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c CAUTION: Avoid injury! Rotating blades are dangerous. Blades may throw debris through raised chute.
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1. Park machine safely. (See Parking Safely in the Safety section.)
2. Push knob (A) down to open grass collector.
3. Disconnect gas cylinders (B) from machine, one on each side.
· Move fastener (C) up and then pull out to release from stud.
4. Pull release handle (D) up to unlock inside support brackets.
5. Lift grass collector off rear of machine.
Installing Grass Collector
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c CAUTION: Avoid injury! Rotating blades are dangerous. Blades may throw debris through raised chute.
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1. Park machine safely. (See Parking Safely in the Safety section.)
2. Pull release handle (A) out to put support brackets (B) in the unlocked (open) position.
3. Align inside bar of grass collector with open support brackets and set bar into brackets.
4. Push release handle (A) down to close support brackets.
5. Attach gas cylinders (C) to machine, one on each side, by aligning slot in fastener (D) with ball joint (E) and releasing fastener down to close.
