BAR / Chain Maintenance, Guide BAR Maintenance

8 - BAR / CHAIN MAINTENANCE

8-1. GUIDE BAR MAINTENANCE

Frequent lubrication of the guide bar (railed bar which sup- ports and carries the saw chain) sprocket tip is required. Proper maintenance of the guide bar, as explained in this section, is essential to keep your saw in good working con- dition.

SPROCKET TIP LUBRICATION:

CAUTION

The sprocket tip on your new saw has been pre-lubricated at the factory. Failure to lubricate the guide bar sprocket tip as explained below will result in poor performance and seizure, voiding the manufacturer’s warranty.

Lubrication of the sprocket tip is recommended after 10 hours of use or once a week, which ever occurs first. Always thoroughly clean guide bar sprocket tip before lubri- cation.

TOOLS FOR LUBRICATION:

The Lube Gun (optional) is recommended for applying grease to the guide bar sprocket tip. The Lube Gun is equipped with a needle nose tip which is necessary for the efficient application of grease to the sprocket tip.

TO LUBRICATE SPROCKET TIP:

WARNING

Wear heavy duty work gloves when handling the bar and chain.

1.Move the STOP switch down.

NOTE: It is not necessary to remove the saw chain to lubri- cate the guide bar sprocket tip. Lubrication can be done on the job.

2.Clean the guide bar sprocket tip.

3.Using the Lube Gun (optional), insert tip of lube gun into the lubrication hole and inject grease until it appears at outside edge of sprocket tip (Figure 8-1A).

4.Rotate saw chain by hand. Repeat lubrication proce- dure until the entire sprocket tip has been greased.

8-1A

GUIDE BAR MAINTENANCE:

Most guide bar problems can be prevented merely by keep- ing the chain saw well maintained.

Insufficient guide bar lubrication and operating the saw with chain that is TOO TIGHT will contribute to rapid bar wear.

To help minimize bar wear, the following guide bar mainte- nance procedures are recommended.

BAR WEAR - Turn guide bar frequently at regular intervals (for example, after 5 hours of use), to ensure even wear on top and bottom of bar.

BAR GROOVES - Bar grooves (or rails which support and carry the chain) should be cleaned if saw has been used heavily or if saw chain appears dirty. Rails should always be cleaned every time saw chain is removed.

OIL PASSAGES - Oil passages on the bar should be cleaned to ensure proper lubrication of the bar and chain during operation.

NOTE: The condition of the oil passages can be easily checked. If the passages are clear, the chain will automati- cally give off a spray of oil within seconds of starting the saw. Your saw is equipped with an automatic oiler system.

8-2. CHAIN MAINTENANCE

CHAIN TENSION:

Check the chain tension frequently and adjust as often as necessary to keep the chain snug on the bar, but loose enough to be pulled around by hand.

BREAKING IN A NEW SAW CHAIN:

A new chain and bar will need chain readjustment after as few as 5 cuts. This is normal during the break-in period, and the interval between future adjustments will begin to length- en quickly.

WARNING

Never have more than 3 links removed from a loop of chain. This could cause damage to the sprocket.

CHAIN LUBRICATION:

Always make sure the automatic oiler system is working properly. Keep the oil tank filled with Genuine McCulloch Chain, Bar and Sprocket Oil.

Adequate lubrication of the bar and chain during cutting operations is essential to minimize friction with the guide bar.

Never starve the bar and chain of lubricating oil. Running the saw dry or with too little oil will decrease cutting efficien- cy, shorten saw chain life, cause rapid dulling of chain, and lead to excessive wear of bar from overheating. Too little oil is evidenced by smoke or bar discoloration.

CHAIN SHARPENING:

Chain sharpening requires special tools to ensure that cut- ters are sharpened at the correct angle and depth. For the inexperienced chain saw user, we recommend that the saw chain be professionally sharpened by the nearest Authorized Service Center. If you feel comfortable sharpen- ing your own saw chain, special tools are available from the nearest Authorized Service Center.

8-3.CHAIN REPLACEMENT INFORMATION

Bar	Drive	Chain Type	Chain Type		Bar Type	Bar Type	Chain	Chain	File
Length	Links	(Oregon)	(Carlton)		(Oregon)	(Carlton)	Gauge	Pitch	Size

14” Bar	52 DL	91PJ052X	N1C-BL-M-52E	SK	140SDEA041	14-10-N1-MHC	0.05”	3/8”	5/32”

16” Bar	56 DL	91PJ056X	N1C-BL-M-56E	SK	160SDEA041	16-10-N156-MHC	0.05”	3/8”	5/32”

There may be other quality equivalent replacement components for achieving kickback protection.

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