McCulloch 33 manual L. Chain sharpening, Specification, Depth Gauge, Machinery Directive, English

L. Chain sharpening

1Chain cutter teeth can be sharpened with a round file, as follows:

CHAIN	FILE
MP 370 GLX	5/32”

The exact chain type is marked on the bottom half of the drive link which runs inside the bar groove.

Filing can be made easier by also using a file holder. The chain can remain fitted on the bar during sharpening. Before commencing, the chain should be tensioned cor- rectly and the chain brake should be activated to prevent the chain from moving.

2To obtain a correct sharpening the file must be carefully

held to maintain 3 basic angles:
– “A” Top angle	30° - 35°
– “B” External, side angle	85° - 90°
– “C” Internal, side angle	60°

File in one direction only, from the “inside” of the cutter tooth towards the “outside”.

Do not allow the file to touch the chain as you bring it

back to re-position it. Each cutter tooth should be filed with the same number of strokes.

3The file should be held horizontally to the cutter tooth being sharpened.

4Best results to obtain a precise sideways angle can be obtained by holding the file so that it rises 0,5 mm above the top face of the cutter tooth.

5DEPTH GAUGE

Correct depth gauge height is vital to ensure maximum chain life and cutting efficiency.

The height of the depth gauge should be lowered as the cutter tooth is filed back; this height should be checked every 4 or 5 sharpenings.

The best way to do this is to use a flat file and a depth gauge tool.

The correct setting is 0.65 mm below the top edge of the cutter tooth.

The cutter tooth depth gauge should then be rounded (D).

Specification
THIS PRODUCT MEETS THE SAFETY STANDARD REQUIREMENT OF THE EUROPEAN
MACHINERY DIRECTIVE
DISPLACEMENT (cm3)	33
BORE AND STROKE (mm)	37x30
ENGINE OUTPUT (kW)	1,2
ENGINE SPEED AT MAX POWER (min-1)	7.000
MAXIMUM SPEED (min-1)	11.000
MINIMUM SPEED (min-1)	2.900
DRY WEIGHT (Kg) (NO BAR AND CHAIN)	3,1
CHAIN PITCH (9,525 mm)	3/8”
CHAIN GAUGE (mm)	1,3
BAR LENGTHS (cm)	30
No. OF SPROCKET TEETH	6
OIL TANK CAPACITY (cm3)	150
FUEL TANK CAPACITY (cm3)	230
SOUND PRESSURE LEVEL (AT THE OPERATOR’S EAR). LpAav (dBA) (EN 27182 - EN 608)	95,9
GUARANTEED SOUND POWER LEVEL (dBA)	113
MEASURED SOUND POWER LEVEL (dBA)	111,14
VIBRATION LEVEL (ISO 7505 - EN 608) (m/s2)	8,5

ENGLISH - 6