Maintenance And Repair Instructions - Troy-Bilt TB475SS Operator's Manual

MAINTENANCE AND REPAIR INSTRUCTIONS

MAINTENANCE SCHEDULE
Perform these required maintenance procedures at the
frequency stated in the table. These procedures should
also be a part of any seasonal tune-up.
NOTE: Some maintenance procedures may require
special tools or skills. If you are unsure about
these procedures take your unit to any non-road
engine repair establishment, individual or
authorized service dealer.
FREQUENCY
Before starting engine
Every 10 hours
First change at 10 hours
Every 25 hours thereafter
Every 25 hours
10 hours on new engine
Every 25 hours
Every 25 hours
LINE INSTALLATION FOR THE SPEEDSPOOL
WARNING: Never use metal-reinforced line,
wire, chain, or rope, etc. These can break off
and become dangerous projectiles.
Always use Genuine Factory Parts™ 0.095 inch
(2.41 mm) replacement line. Lines other than those
specified may make the engine overheat or fail.
There are two methods to replace the SpeedSpool
trimming line:
• Wind the inner reel with new line
• Install a pre-wound inner reel
Winding the Inner Reel With New Line
NOTE: It Is unnecessary to remove the bump knob to
install a new trimming line.
1. Cut two pieces of 0.095 inch (2.41 mm) trimming
line, 10 feet (3 m) long.
2. Hold the outer spool and turn the inner reel
counterclockwise to line up the arrows on the outer
spool and inner reel (Fig. 20).
NOTE: Maintenance, replacement, or repair of the
MAINTENANCE REQUIRED
Fill fuel tank with fresh fuel
Check oil
Clean and re-oil air filter
Change oil
Change oil
Clean spark arrestor
Check rocker arm to valve clearance and adjust
Check rocker arm to valve clearance and adjust
Check spark plug condition and gap
®
®
Outer Spool
Inner Reel
emission control devices and system may be
performed by any non-road engine repair
establishment, individual or authorized service
dealer.
WARNING: To prevent serious injury, never
perform maintenance or repairs with the unit
running. Always service and repair a cool unit.
Disconnect the spark plug wire to ensure that
the unit cannot start.
WARNING: Always use the correct line
length when installing trimming line on the
unit. The line may not release properly if the
line is too long.
Top View Of The SpeedSpool
Fig. 20
REFER TO
Page 9
Page 16
Page 17
Page 16
Page 16
Page 20
Page 18
Page 18
Page 20
®
Arrows
Bump Knob
13