3.2 Wheels/Tyres
Regularly check the wheel rims and tyres for damage (cuts, tears, bumps). Warning: damage to rims and tyres
may cause accidents!
Tyre pressure should be between 1.0 and 1.5 bar. (Remember pressure increases at high temperatures). At he
right pressure, the go-kart drives smoothly and lightly. If there is not enough pressure the tyres tend to get punc-
tured more easily and excessive wear and tear occurs. If there is too much pressure the tyre can come off the rim.
This may lead to dangerous situations. (Be aware that pressure increases under high temperatures and in blazing
sun!) Avoid contact between the tire and oil, grease or fuel. Make sure the valve caps are always on.
3.3 Steering
The steering mechanism should regularly be greased for it to run smoothly. For the adjustable
wheel it is important that the identifying mark on the side of the inner control tube is not visible. See picture 1.
Picture 1
The steering mechanism of every BERG go-kart needs to be checked once a month for the following:
•
breaking and/or damage of all parts of the steering mechanism
•
controls (lubricate all rotation points)
•
alignment front wheels (see pictures next page) for models with double ball steerage
•
stuck bolts
3.3.1
Alignment front for models with double ball steerage
1) Check if bottom of strip is in upright position.
2) Then check the smallest deflection of the left and
right wheel with the front bumper (As indicated in
the picture).
3) Loosen the steering swivel at the side of the
wheel with the smallest deflection (see 2). Then
push against the wheel in the direction away from
the bumper (see indicator in the top left of the
picture). After that, tighten the steering swivel well.
4) Distance X = distance Y - 5 mm
3.4
Driving gear
3.4.1 Chain
The chain needs to be greased regularly in order to run smoothly. It should only be possible to push in the chain
2 to 3 cm in the middle. Make sure the rear axle does not move when the chain is pushed in the middle.
If the chain is pulled too tight, the go-kart will peddle heavily and the axle could break. If the chain is not tight
enough, the chain guard may be damaged. Tightening the chain for models with a square frame is carried out as
follows (see picture 2a):
Picture 2a
Picture 2b
To tighten the front chain (see also picture 4b): loosen bolt C and bolt D a little and tighten the chain with bolt E.
Tighten C and D again. ATTENTION: the chain may NOT be TOO TIGHT. Remove the lower half of the chain guard
to check this. The chain should be easy to push in the middle for about 2 cm. The BF-3 and BF-7 models also have
a second chain. This back chain is tightened as follows: remove the protective plate from the back hood. Make
sure the hub remains exactly parallel to the rear axle (maximum 1 mm difference in distance between rear axle
and the small axle of the brake hub left and right), as can be seen in the picture below (picture 2c). It should be
possible to push in the chain in the middle with the thumb for about 3-4 mm (picture 2d). After this, the front
chain is tightened.
