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4/5

Chain type

492 (91PX), 290 (90SG),

291 (90PX)

Files and how to work with them

Useaspecialsawchainroundleforsharpening.Standard

roundlesareunsuitable.

Type 492 (91PX):Sawchainroundle,dia.5/32”(4.0mm).

Type 290 (90SG), 291 (90PX):Sawchainroundle,

dia. 11/64” (4.5 mm).

Theleshouldcutonlywhenpushedforwards(arrow).Lift

thelewhenleadingitbackwards.

First sharpen the shortest cutter. The length of this cutter is

then the standard for all other cutters of the chain.

Newsawteethmustbeledtotheexactsameshapeasthe

used teeth, including on their running surfaces.

File depending on chain type (90° to the guide bar).

Aleholdermakesleguidanceeasier.Itismarkedforthe

correct sharpening angle of:

α=30°

(keepthemarksparallelwiththechainwhenling,see

illustration) and limits the cut depth to the correct 4/5 of the

lediameter.

After having sharpened the chain, the height of the depth

limiter must be checked by means of a chain gauge.

Correcteventhesmallestexcessheightwithaspecialat

le(1).

Round off the front of the depth limiter (2).

Makita EA3501S User Manual

Other manuals for Makita EA3501S