Service Mower
Removing or Installing Mower Drive Belt at Engine Drive Sheave (122 cm (48 in.) and 137 cm (54 in.) Mower Deck)
1. Park machine safely. (See Parking Safely in SAFETY section.)
2. Put lift lever in lowest position.
c CAUTION: Avoid injury! Component is spring-assisted and under tension. Injury can occur if spring-assisted component is released suddenly.
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3. Put a 15 mm closed wrench or a socket on the idler sheave nut (A) and rotate clockwise to move idler sheave toward front of tractor and hold to release belt tension.
4. Remove belt (B) from drive sheave (C), and release tension on sheave nut (A).
5. To install the belt on the drive sheave, rotate idler sheave nut clockwise to move idler sheave toward front of tractor, and install belt on drive sheave.
6. Release idler sheave nut to tighten belt.
Removing Mower Deck
1. Park machine safely. (See Parking Safely in SAFETY section.)
2. Put wood blocks under each side of mower deck.
3. Put attachment lift lever in lowest position, bringing mower deck down onto blocks.
Picture Note: 107 cm (42 in.) mower deck only.
4. On machines with 107 cm (42 in.), disconnect mower engagement drive cable (A) on left side of mower deck.
a. Remove spring locking pin (B), pull and hold mower engagement drive cable out, lift up and remove from bracket (C).
b. Remove cable spring (D) from idler sheave bracket (E).
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c CAUTION: Avoid injury! Mower lift arms can pinch fingers. Lift arms are spring loaded and can snap back when deck is removed.
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5. Remove spring locking pins and washers (F) and disconnect rear draft arm (G) and adjustable lift links (H) on each side.
Picture Note: 107 cm (42 in.) mower deck shown.
6. Remove spring locking pin and washer (I) and front draft rod (J) from mower deck bracket (K).
7. Remove mower drive belt from drive sheave (L).
8. Remove wood blocks from both sides and slide mower deck out from under the machine.
9. When operating the machine without the mower deck:
• Remove front draft rod from machine and attach it to the mower deck.
• On 107 cm (42 in.) mower deck only: Push mower engagement drive cable into clip (M) and hook end of cable spring with hardware (N) into peg on left side of machine frame.
Installing Mower Deck
1. Park machine safely. (See Parking Safely in SAFETY section.)
2. Put attachment lift lever in the transport position.
4. Put wood blocks under each side of mower deck.
5. Put attachment lift lever in lowest position.
6. Fasten rear draft arm (A) and adjustable lift link (B), on each side, with washers and spring locking pins (C).
IMPORTANT: Avoid damage! To prevent clutch damage, make sure front draft rod is installed correctly. Secure rod with washer and spring locking pin on the left side of mower deck bracket. |
Picture Note: 107 cm (42 in.) mower deck shown.
7. Install front draft rod (D) into mower deck bracket (E) and secure with washer and spring locking pin (F) on the left side of bracket as shown.
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c CAUTION: Avoid injury! Component is spring-assisted and under tension. Injury can occur if spring-assisted component is released suddenly.
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Picture Note: 122 cm (48 in.) mower deck used for photo purposes.
8. Put mower drive belt on engine drive sheave (G).
• On 122 cm (48 in.) and 137 cm (54 in.) mower decks: Put a 15 mm closed wrench or a socket on the idler sheave nut (H) and rotate clockwise, moving idler sheave and tensioning arm toward front of tractor. Hold while installing belt on drive sheave.
• On 107 cm (42 in.) mower deck: Make sure belt is routed through both belt guides (I).
9. Remove wood blocks from both sides of mower deck.
10. On machines with 107 cm (42 in.) mower deck: Attach mower engagement drive cable.
Picture Note: 107 cm (42 in.) mower deck only.
a. Route cable under mower belt and brake rod and attach cable spring (J) to idler sheave bracket (K).
b. Pull out on cable (L), align black end of cable with slot in bracket (M) and release cable into slot. Secure with spring locking pin (N).
Replacing Mower Drive Belt (107 cm (42 in.) Mower Deck)
1. Park machine safely. (See Parking Safely in the SAFETY section.)
a. Remove three capscrews and belt shield (A).
b. Remove two capscrews and belt shield (B).
4. Inspect belt for wear or damage; replace as necessary.
5. Clean top surface of mower deck and sheaves.
6. Install belt on mower deck as shown. Make sure belt is in the groove of each sheave.
7. Tighten sheaves to 47 N•m (35 lb-ft).
10. Adjust mower belt tension and spindle brakes, if necessary.
Replacing Mower Drive Belt
(122 cm (48 in.) and 137 cm (54 in.) Mower Decks)
1. Park machine safely. (See Parking Safely in SAFETY section.)
Picture Note: 122 cm (48 in.) mower deck shown.
3. Remove five capscrews and left and right belt shields (A).
a. Loosen left side sheaves (B) and (C).
5. Inspect belt for wear or damage; replace as necessary.
6. Clean top surface of mower deck and sheaves.
7. Install belt on mower deck as shown. Make sure belt is in the groove of each sheave.
8. Tighten sheaves to 47 N•m (35 lb-ft).
Adjusting Mower Belt Tension (107 cm (42 in.) Mower Deck)
1. Park machine safely. (See Parking Safely in the SAFETY section.)
2. Move mower engagement (PTO) lever or switch to OFF position.
3. Loosen nuts (A) and move cable bracket (B) away from the center of mower deck to tighten belt tension. Move bracket until almost all slack is out of cable but cable is not too tight. Tighten nuts.
Adjusting Spindle Brakes (107 cm (42 in.) Mower Deck)
1. Park machine safely. (See Parking Safely in the SAFETY section.)
3. Remove left and right belt shields, and adjust two blade brakes (A).
4. Measure distance from spindle brake bracket (B) to nut (C) on end of brake rod.
• Bracket to nut distance should be: 2 - 3 mm (0.08 - 0.12 in).
5. If adjustment is required, turn nut (C) on end of brake rod in correct direction to set brake at proper distance from pulley.
7. Install left and right belt shields.
Checking for Bent Mower Blades
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c CAUTION: Avoid injury! Blades are sharp. Always wear gloves when handling 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 SAFETY section.)
2. Raise mower deck to gain access to mower blades. If necessary, remove mower deck.
3. Block mower blade with a piece of wood to prevent it from spinning.
4. Loosen and remove nut (A), washer (B), and blade (C).
5. Inspect blades; sharpen, balance or replace blades as necessary.
Installing Mower Blades
1. Position mower blade (C) with the cutting edge towards the ground.
2. Align the splined center hole in the blade with the splined spindle shaft (D) and put the blade onto the mower spindle shaft.
3. Install washer, with cupped side towards blade, and install nut to secure blade onto splined spindle shaft.
4. Block mower blade with a piece of wood to prevent spinning and tighten nut:
• Using 15/16 in. socket, tighten 5/8 in. blade nut to 88 N•m (65 lb-ft).
Sharpening Blades
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c CAUTION: Avoid injury! Blades are sharp. Always wear gloves when handling blades or working near blades.
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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! Blades are sharp. Always wear gloves when handling 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.