Troy-Bilt 665B ユーザーズマニュアル

Maintenance

5

Section

Proper lubrication of the tiller is an essen-
tial part of your maintenance program.
After every 10 operating hours, oil or
grease the lubrication points shown in
Figure 5-1, as described below.

Use general purpose lubricating oil (#30
weight motor oil is suitable) and a general
purpose grease (grease that has a metal
lubricant is preferred, if available).

• Remove wheels and clean wheel shaft

(A, Figure 5-1).  Apply a thin coating of
grease to shaft before reinstalling
wheels.

• Grease back, front and sides of Depth

Regulator Lever (B, Figure 5-1).

• Remove tines and clean tine shafts (C,

Figure 5-1).  Inspect tines for rust, rough
spots or burrs (especially around holes).
File or sand smooth and coat ends of
shaft with grease.

• Oil threads on handlebar height adjust-

ment flange screw (D, Figure 5-1).

• Oil threads on handlebar attaching

screws (E, Figure 5-1).

Check unit for loose/missing hardware
after every 10 operating hours.  Loose or
missing hardware can lead to equipment
failure, poor performance, or oil leaks.

Be sure to check the three end cap mount-
ing screws located at the rear of the trans-
mission (Figure 5-2).  Lift the tine flap to
service those screws.

Check air pressure in both tires.  Deflate or
inflate both tires evenly to 15-to-20 PSI
(pounds per square inch).  Be sure that
both tires have same air pressure or unit
will pull to one side.

Before each use, check tiller for signs of
oil leakage—usually a dirty, oily accumu-
lation either on unit or on floor where it
has been parked.

A little seepage around a cover or oil seal
is usually not cause for alarm. However, if
oil drips overnight, then immediate atten-
tion is needed—ignoring a leak can result
in severe transmission damage. 

If a cover leaks, try tightening any loose
screws or bolts.  If fasteners are tight, a
new gasket or oil seal may be needed.  If
leakage occurs around a shaft and oil seal,
the oil seal probably needs replacement.
See an authorized dealer or contact the
factory for service or advice.

IMPORTANT: Never operate tiller if trans-
mission is low on oil.  Check oil level after
every 30 hours of operation and whenever
there is any oil leakage. 

Gear Oil Specifications
For small top-offs:  Use SAE 140, SAE
85W-140, or SAE 80W-90 gear oil with an
API rating of either GL-4 or GL-5.

For full replacement: Use SAE 140 or SAE
85W-140 gear oil with API rating of GL-4
(do not use GL-5).Check transmission
gear oil level after every 30 hours of oper-
ation or whenever an oil leak appears.
Operating the tiller when transmission is
low on oil can result in severe damage.

1. Check gear oil level when transmission
is cool.  Gear oil expands when warm and
will result in an incorrect oil level reading.

2. To check gear oil level (and to add oil, if
necessary), see Section 2, STEP 5: Check
Gear Oil Level in Transmission.  Also see
B. To Drain and Refill Transmission in this
section.

The transmission gear oil does not need
changing unless it has been contaminated
with dirt, sand or metal particles. 

1. Prop up left side of unit so that it is
securely supported.  Remove left-side
wheel by removing wheel mounting
hardware.

MAINTENANCE SCHEDULE

Check motor oil level

2, 3

Clean engine

2, 7

Check clutch belt tension

1, 4

Check nuts and screws

1, 4

Change motor oil

1, 4, 6

Lubricate tiller

4

Service foam pre-cleaner air filter
(if so equipped)

7

Service paper air filter (if so equipped)

7

Check gear oil level in transmission

1, 5

Check tines for wear

5

Check air pressure in tires

5

Service spark plug

7