Bolens 645A サービスマニュアル

After every 10 operating hours, oil or grease the lubrica-
tion points shown in Figure 5-1 and described below.
Use clean lubricating oil (#30 weight motor oil is 
suitable) and clean general purpose grease (grease 
containing a metal lubricant is preferred, if available).
•  Remove the wheels, clean the wheel shaft (A, Fig. 

5-1) and apply a thin coating of grease to the wheel 
shaft.

•  Grease the back, front and sides of the depth regula-

tor lever (B, Fig. 5-1).

•  Remove the tines and clean the tine shaft (C, Fig. 

5-1). Use a file or sandpaper to gently remove any 
rust, burrs or rough spots (especially around holes in 
shaft). Apply grease to ends of shaft before installing 
tines.

•  Oil the threads on the handlebar height adjustment 

screws and the handlebar attaching screws (D, Fig. 
5-1).

Before each use, check the tiller for signs of an oil leak 
— usually a dirty, oily accumulation either on the unit or 
on the floor.
A little seepage around a cover or an oil seal is usually 
not a cause for alarm. However, if the oil drips overnight, 
then immediate attention is needed. Ignoring an oil leak 
can result in severe transmission damage!
If a cover is leaking, check for loose screws. If the screws 
are tight, a new gasket or oil seal may be required. 
If the leak is from around a shaft and oil seal, the oil seal 
probably needs to be replaced. See your authorized 
dealer or contact the factory for service or advice.
IMPORTANT: Never operate the tiller if the transmission 
is low on oil. Check the oil level after every 30 hours of 
operation and whenever there is any oil leakage. 

Check for loose or missing hardware after every 10 
operating hours and tighten or replace (as needed) 
before reusing tiller
Be sure to check the screws underneath the tiller hood 
that secure the transmission cover and the Depth Regula-
tor Lever to the transmission.

(Models with pneumatic tires)
Check the air pressure in both tires. The air pressure 
should be between 15 PSI and 20 PSI (pounds per 
square inch). 
Keep both tires equally inflated to help prevent machine 
from pulling to one side.