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The return hose can be #8 or 1/2" diameter for the first three feet, if a longer hose is required it must be #12 or
3/4" up to thirty feet. If the total return hose length is greater than thirty three feet #16 or 1" hose should be used.
The filter must be rated for 20 GPM plus any additional pump flowing into it. Failure to properly size the hose
and filter or properly connect the return hose to a filter and tank will shorten the motor shaft seal life and will not
be covered by warranty.
Chain Tension and Sharpening
4B
Figure 6 shows the chain tensioning screw. A #2 or #3 Phillips screwdriver is required to turn the tension screw.
With the supplied sprocket nose saw bar supplied proper tension is when the cutters come off the rails roughly
1/8" with a tug of finger pressure. Refer to the Oregon Mechanical Timber Harvesting Handbook for more
tensioning information and sharpening information.
Sprocket Removal and Replacement
5B
The chain saw sprocket is connected to the shaft with a tapered bushing. To remove the sprocket remove the Cap
Screws (Fig 7, Item 3) and screw them into the Threaded Holes, tighten up to 36 inch pounds to push the Sprocket
(Fig 7, Item 1) off the bushing. You may need to tap the Sprocket towards the motor with a hammer to assist in
getting the Sprocket loose from the Bushing (Fig 7 Item 2). Lightly drive a flat blade screwdriver into the slot of
the Bushing.
Fig. 6
Fig. 7
6
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