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Service Mower - 37
SERVICE MOWER
Checking and Adjusting Cutting Height
Checking Thrust Arm-to-Stop Rod Clearance (Transport Position)
1.Park machine safely. (See Parking Safely in the SAFETY section.)
2.Set mower deck to transport (fully raised) position.
3.Check clearance (A) from the top of the thrust arms (B) to the bottom of
the thrust arm stop rod (C). The clearance should be 3 mm (1/8 in.).
Adjust Thrust Arm-to-Stop Rod Clearance (Transport Position)
1.Park machine safely. (See Parking Safely in the SAFETY section.)
2.Loosen jam nut (A).
NOTE: If correct adjustment cannot be obtained by adjusting the lift
handle connecting rod, further movement can be gained by
adjusting the chain U-bolts.
Adjust all four chain U-bolts equally. All four chains should be tight.
Tighten the U-bolt of the loose chain to correct.
3.Adjust deck lift handle connecting rod (B) while viewing adjusting
mechanism from rear of machine.
• To lower deck, turn nut (C) counterclockwise.
• To raise deck, turn nut (C) clockwise.
4.Tighten jam nut (A).
Adjusting Deck Lift Assist Spring Tension
NOTE: Deck lift assist spring tension is adjusted at the factory. If the
effort required to raise or lower the mower deck is not satisfactory,
an adjustment may be necessary.
Check Spring Tension
1.Park machine safely. (See Parking Safely in the SAFETY section.)
2.Raise the mower deck lift lever to the transport position.
3.Measure distance (A) between the washers (B) on each deck lift spring
assembly.
• The recommended factory setting is approximately 1 mm (1/32 in.)
gap between the spring coils at the lowest HOC setting.
Adjust Assist Spring Tension
NOTE: Do not overtighten the deck lift assist springs. If the springs
are compressed too tightly, the mower deck will float too freely.
Decrease deck lift assist spring tension if operating in rough terrain.
While positioned in front of the machine:
• Turn hex nut (C) clockwise to increase deck lift spring tension and
reduce the effort to raise and lower the mower deck.
• Turn hex nut (C) counterclockwise to decrease deck lift spring tension
and increase the effort to raise and lower the mower deck.
Checking and Adjusting Mower Deck Drive Belt
Tension
1.Park machine safely. (See Parking Safely in the SAFETY section.)
2.Adjust the mower deck for the lowest cutting height, and lower the deck.
3.Raise foot platform.
CAUTION: Avoid injury! Rotating blades are dangerous.
Before adjusting or servicing mower:
•Remove ignition key or disconnect battery negative (-)
cable to prevent engine from starting accidently.
•Always wear gloves when handling mower blades or
working near blades.