Maintenance And Adjustments
3. Belt replacement. Tilt the machine on its side (ob-
serving the following precautions) and block securely.
**KAWASAKI twin cylinder - Do not tilt the machine on
its nose as this is where the carburetor is located. It is
okay to turn this model on either its left or right side.
(a) Remove pad.
(b) Use a suitable wrench to secure the top of the
shaft and spin off the pad driver and remove it from
the machine.
(c) Remove old belt carefully and completely.
(d) Install new belt and adjust the pressure of the
Lovejoy tensioner.
(e) Reinstall pad driver.
Recommended 20 Hour Maintenance Items -
>Change engine oil.
>Check pad driver for loose parts.
>Check belt for wear or slippage.
>Check engine pulley for tightness.
>Check wheel bolts.
>Check engine mount bolts.
>Check handle bolts.
>Check for leakage of engine oil at the various seals.
Recommended Oil Change Intervals
Do not exceed the 20 hour oil change interval. Oil changes
more frequent than 20 hours will give even longer engine
life. In any case, always use 30HD or 10W30 engine oil
with all of the following ratings: SF, SG, CC. The various
engines have different oil sump capacities. Make sure the
oil level is maintained at the "FULL" level.
Recommended 200 Hour Maintenance
Return machine to authorized service center for overall
checkup.
Trouble Shooting
When troubles occur, be sure to check the simple causes
which at fi rst, may seem too obvious to be considered. For
example, a starting problem could be caused by fuel star-
vation due to an empty propane cylinder or an unopened
service valve. If you don't check for this, starter burnout
could result.
1. KAWASAKI - "SURGING IDLE" - To smooth out the
engines' idle characteristics, adjustment is provided by
an idle screw on the lower left side of the carburetor
as viewed from the operator's position. The screw is
bright steel and 1/4" in diameter with a Phillips head
on it. Rotating the screw clockwise will increase the
idle speed and this should cure the "surging idle". IF IT
DOES NOT, contact your sales or service
representative.
BLASTRAC Operator's Manual (EN) - Concrete Polisher
2. EXCESSIVE VIBRATION - Look for the following pos-
sibilities:
(1) Pad is off center. Remove and reinstall.
(2) Pad Driver is bent or cracked. (Possibly from
striking a curb or bolt in the fl oor.) Replace im-
mediately with a new part only.
(3) Bearings in Front End Assembly are worn. Place
machine on its side where the muffl er is
mounted. Grip Pad Driver and move up, down
and from side to side to check for slack in the
bearings. If this is the case, then to effect a
proper repair, the bearings should be replaced
and possibly the shaft.
(4) Check to see if the bolts on shaft housing are
tight. Look to see if the nuts, bolts and spacers
on the Flex Coupler Assembly are all in place and
tight.
3. ENGINE STARTS AND IDLES, BUT WILL QUIT AS
THE THROTTLE IS ADVANCED - It is possible that
the propane tank's service valve is faulty. To check for
this, close the valve completely and then reopen very
slowly while you listen for a "click" when the gas be-
gins to travel through the valve. If you hear this very
slight noise, then what is happening is the valve is only
partially opening. This allows enough gas through to
start and idle the engine, but not enough for full throttle
operation. As the throttle is increased, allowing more
air to enter the intake, the engine will quit from fuel
starvation. Call your dealer for instructions on where
to have the service valve replaced. Meanwhile, to
get by, you can continue to open the service valve
until you don't hear a "click" and then the engine will
run normally. IF IT DOES NOT, contact your sales or
service representative.
4. THE BUFFER SEEMS TO RUN WELL BUT DIES
DOWN WHEN THE PAD IS PLACED ON THE
FLOOR OR SOON THEREAFTER - Check for the
same problem as in #3.
5. EXCESSIVE NOISE FROM UNDER BUFFER - If this
problem has developed after use of the machine from
new, then the fi rst place to check is the Lovejoy Ten-
sioner. As a new belt wears in, it naturally stretches
a bit and the tensioner will begin to rattle. Place the
buffer on its side (with the muffl er down) and reset by
taking up the slack in the belt and tighten the Lovejoy
Tensioner.
6. STARTER WILL HARDLY TURN THE ENGINE OVER
or THE SOLENOID JUST CLICKS ON 12 VOLT OP-
TION MODELS - The battery is likely low in charge.
This can be remedied by recharging the battery using
a 12 volt battery charger at 4-12 amperes. The battery
is located under the frame at the rear of the buf-
fer. The positive post is the one with the RED cable
attached to it. Follow the instructions that came with
the battery charger. REMINDER: this will continue to
happen unless the buffer's engine is run for suffi cient
time between starts to recharge the battery.
7. KAWASAKI V-TWIN - ENGINE BACKFIRES
LOUDLY AND REGULARLY SUDDENLY - Check
the sparkplug boots. One of them is likely cracked,
possibly due to contacting a corner of a shelf or a door
frame. Remove the sparkplug lead from the
sparkplug and replace the boot with a new one. The
engine should now run normally. IF IT DOES NOT
contact your sales or service representative.
ENGLISH
EN
FORM NO. 71511A - 15 -