Superabrasive
User Manual Original Language
Lavina® 20G-X
4/2018
22
CHECK AND REPLACE EVERY 50 WORKING HOURS
Change engine oil, while changing check for leakage of engine oil at the various seals. The hour meter will blink between
48‐52 hours as a reminder. /"Engine Oil Capacity" is 1.5L(1.6US.qt) when oil filter is not removed 1.7L(1.8US.qt) when oil
filter is removed/.
Recommended
Oil
Change
Intervals
Do not exceed the 50‐hour oil change interval. Oil changes more frequent than 25 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, and CC. make sure the oil level is
maintained at the "FULL" level.
CHECK AND REPLACE EVERY 200 WORKING HOURS
Every 200 working hours the operator should inspect all parts of the machine
carefully. Most importantly, inspect and clean the tool plate connections, vacuum
hoses and water tank. Also, check the water flow. Check the guard assembly. Make
certain the wheels are clean and rotate properly. Inspect the control buttons. If
there are defective control parts, they should be replaced immediately. Replace
worn vacuum‐ and water hoses.
Carefully inspect the seal rings and bearings of the grinding units, and
replace any showing signs of excessive wear. For more information, refer to
chapter troubleshooting below.
Open the service
cover on the motor base (Fig 7.2) (Fig 7.3) to check of
the planetary chain. Lubricate
the chain with special lubricant for chains and
correct the sag if needed
. For sagging correction (See TROUBLESHOOTING
)
.
Dismount the tool holders (See Troubleshooting) replace all parts (elastic element,
buffers, sealers) with the slightest damage or consume.
Return
machine to
authorized service center
for overall checkup of the Engine. For Propane safety,
have the machine serviced by a
Certified Technician
, including emission check.
CHECK AND REPLACE EVERY 400 WORKING HOURS
Besides the checks of 200 working hours, replace sealer and V‐rings like described in chapter “TROUBLESHOOTING
REPLACING BELT AND PULLEY UNITS. Check if belts and bearings are in good condition, change if needed.
Return machine to authorized service center for overall checkup of the Engine. For Propane safety, have the machine serviced
by a Certified Technician, including emission check.
VACUUM
As stated previously, frequently check hoses and othe r parts for clogging.
WATER LEAKS
Replace any leaking parts immediately as the water could damage your machine
MECHANICAL PARTS
Parts such as the belts, seal rings, cap rings, spiders and buffers and guard assembly are subject to wear and should be replaced
as needed.
8. TROUBLESHOOTING
8.1 ENGINE
When troubles occur, be
sure
to
check
the
simple
causes which at first, may seem too obvious to be considered. For example,
a starting problem could be caused by fuel starvation due to an empty propane cylinder or an unopened service valve. If you
do not check for this, starter burnout could result.
Some Troubles and solutions:
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, call our customer service.
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 begins to travel through the valve. If you hear this very slight noise, 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 or the factory for instructions on where to have the service valve replaced. Meanwhile, to get by, you can
continue to open the service valve until you do not hear a “click" and then the engine will run normally. If it does not, call
your customer service.
Figure 7.2
Figure 7.3
