Troy-Bilt OG-4904 Lawn Mower User Manual


 
SIX SPEED SHIFT CABLE ADJUSTMENT
Periodic adjustment of the six speed shift ca
-
ble may be required due to normal stretch
and wear on the cable. Adjustment is
needed if all six speeds cannot be obtained.
The adjustable cable bracket is located on
the left side of the mower, beside the en
-
gine. To adjust, loosen the hex nut which
secures the adjustable cable bracket. See
Figure 17. Pull backward on the bracket (to-
ward the rear of the mower). Retighten the
hex nut. Test the speeds on the mower (en-
gine must be running).
CARBURETOR ADJUSTMENT
Refer to the separate engine manual packed
with your mower for carburetor adjustment
information.
LUBRICATION
CAUTION: DISCONNECT SPARK
PLUG WIRE BEFORE SERVICING.
WHEELS - If your mower is equipped with
ball bearing wheels, lubricate at least once a
season with a light oil, all other types require
no lubrication. However, if the wheels are re
-
moved for any reason, lubricate the surface
of the axle bolt and the inner surface of the
wheel with light automotive oil.
ENGINE - Follow engine manual for lubrication
instructions.
BLADE CONTROL - Lubricate the pivot points
on the blade control handle and the brake cable
at least once a season with light oil. The blade
control must operate freely in both directions.
TRANSMISSION - The transmission is
pre-lubricated and sealed at the factory. It
does not require checking. If disassembled
for any reason, fill with 2 ounces of Alvania
grease, part number 737-0168.
MAINTENANCE
For best results your blade should be sharp.
The blade may be resharpened by removing
it and either grinding or filing the cutting
edge keeping as close to the original bevel
as possible.
Improper blade balance will result in exces-
sive vibration causing eventual damage to
the engine and mower. Be sure to carefully
balance blade after sharpening.
After prolonged use, especially in sandy soil
conditions, the blade will become worn and
lose some of the original shape. Cutting effi-
ciency will be reduced and the blade should
be replaced. Replace with an approved factory
replacement blade only. Possible damage re-
sulting from blade unbalance condition is not
the responsibility of the manufacturer.
ENGINE
Refer to the separate engine manual for en
-
gine maintenance instructions.
Maintain engine oil as instructed in the sepa
-
rate engine manual packed with your unit.
Read and follow instructions carefully.
Under normal conditions service air cleaner
as instructed in the separate engine manual
packed with your unit. Clean every few
hours under extremely dusty conditions.
Poor engine performance and flooding usu
-
ally indicates that the air cleaner should be
serviced.
The spark plug should be cleaned and the
gap reset once a season. Spark plug replace
-
ment is recommended at the start of each
mowing season; check engine manual for cor
-
rect plug type and gap specifications.
13
Figure 17
Hex Nut
Adjustable
Cable Bracket
Six Speed
Cable
Figure 16
Loosen
Tighten
BOTTOM
VIEW