Troy-Bilt TB4000 manual Maintenance Schedule, When Maintenance Needed GO to, Line Installation

Section 6

Maintenance

NOTE: Some maintenance procedures may require special tools or skills. If you are unsure about these procedures take your unit to an authorized service dealer.

MAINTENANCE SCHEDULE

These required maintenance procedures should be performed at the frequency stated in the table. They should also be included as part of any seasonal tune- up.

To prevent serious injury, never do maintenance or repairs with unit running. Always do mainte- nance and repairs on a cool unit. Disconnect spark plug wire to ensure the unit will not start.

WHEN	MAINTENANCE NEEDED	GO TO:
Before Starting Engine	Fill fuel tank with fresh unleaded fuel	Page 14
	Check oil	Page 20
After the First 10 Hours of Use	Change oil	Page 20
Every 10 Hours	Clean and re-oil air filter.	Page 21
Every 25 Hours	Change oil	Page 20
Every 50 Hours	Check rocker arm to valve clearance and adjust as required	Page 22-23
	Check spark plug condition and gap	Page 23

Outer Spool

Spring

Inner Reel

Bolt

Bump Knob

Fig. 6-1

Indexing Teeth

Fig. 6-2

18

LINE INSTALLATION

This section covers both Membrane line and standard single line installation.

Always use manufacturer’s 0.095 inch (2.41 mm) replacement line. Line other than specified may make the engine overheat or fail.

Never use metal-reinforced line, wire, chain, or rope, etc. These can break off and become a dangerous projectile.

There are two methods to replace the trimming line.

•Wind the inner reel with new line

•Install a prewound inner reel

Winding the Existing Inner Reel

1.Hold the outer spool with one hand and unscrew the Bump Knob clockwise (Fig. 6-1). Inspect the bolt inside the Bump Knob to make sure it moves freely. Replace the Bump Knob if damaged.

2.Remove the inner reel from the outer spool (Fig. 6-1).

3.Remove spring from the inner reel (Fig. 6-1).

4.Use a clean cloth to clean the the inner reel, spring, shaft, and inner surface of the outer spool.