Replacing The Pulley Rubber D2-3; Correction Procedure For Oblique Cutting E - Rothenberger PORTACUT 185 Serie Instrucciones De Uso

5.3 Replacing the pulley rubber
Before replacing the pulley rubber, always disconnect the power cord. The
machine may start suddenly, leading to injury!
When opening the front cover, guard against the saw blade which may spring
out of the machine!
 Detach saw blade referring to 5.1.1. Replacing the saw blade.
 Using a screwdriver or the like, remove the saw blade support for pulley (1).
 To remove the pulley rubber (2), pull out its outer periphery by hand.
 Extend a new pulley (3) in the circumferential direction and fit it into the highs and lows of
the pulley in sequence.
 After fitting, hand-turn the pulley and make sure that the rubber fits in the highs and lows
completely. Always wipe oil, if any, off the pulley rubber.
 Reinstall the saw blade support for pulley (4).
 Install saw blade in order of (Fig.D-1).
5.4 Correction procedure for oblique cutting
If the saw blade cuts obliquely, check for worn bearings in the blade guide heads!
When the back stopper ball bearing (1) is worn :

Remove the blade stopper bearing (2), remove the
adjustment bolt (3), and change the back stopper ball
bearing. (For bolt F and R)
When the blade stopper ball bearing (2) are worn:

Change all the blade stopper ball bearings. (For bolt
F and R) The bearing will come off by removing the
U nuts (4) under the bearings.
If oblique cutting still persists after bearing replacement, make corrections in the following pro-
cedure:
 Prepare a pipe.
 Cut it once in an ordinary state. (Mark the pipe end faces to indicate which side is top or bot-
tom.)
 After rotating the pipe a half turns, cut it once more to a length of about 5 mm. (Mark the
pipe end to indicate which side is top or bottom and right or left.)
Immediately after cutting, fragments are hot. Do not touch them directly with
hands! Wait for a while or hold the pipe with a cloth. Otherwise you may get
burned!
 Measure the top, bottom, right and left lengths of that butt end with a rule, yard stick or the
like. A difference between these lengths indicates an oblique cut. An oblique cut value is a
half of this difference.
 When there is a difference between top and bottom lengths, detach saw blade referring to
5.1.1. Replacing the saw blade.
Typ BSR:
 Loosen the two bolts (5) of blade guide (6) and the lock nut (7) of blade guide head, and turn
the adjustment bolt clockwise or counter clockwise to adjust the angle of the blade guide
head.
 When the top length is larger: Turn the adjustment bolt counter clockwise. When the bottom
length is larger: Turn the adjustment bolt clockwise. A half turn of the adjustment bolt allows
adjustment of about 0.8 mm (For 4" pipe).
Always adjust the blade guides F and R to the same value. (After adjustment, always make sure
that the end of the adjustment bolt makes contact with the surface of the blade guide.)
ENGLISH
D2-3
E
Back stopper, ball
bearing
Blade stopper, ball
bearing
Saw blade
19