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As the engine warms use the large headed slide screw to set tick over speed.
Warning: You must ensure that it is not ticking over too fast or the clutch will start to drag which will cause
excessive wear.
Once the engine temp gauge shows around 50C switch the engine off and carry out two important checks.
Leave for 5 minutes to cool, then with the kart level; make sure that the oil level is at the top of the sump sight
glass, topping up if necessary. If you overfill with oil, the condenser overflow plastic bottle will quickly fill so
only run engine with correct levels. Second carefully remove the radiator cap when cool and make sure that
the water level is still just above the top radiator core. Replace the cap. You may now start the engine and
take the kart out onto the track to follow the running in process.
Warning: Do not touch the engine, the radiator or the exhaust system during and immediately after kart
operation. Risk of burning.
Warning: Do not remove the radiator cap or water coolant hoses during and immediately after kart
operation. Risk of burning & scalding.
Warning: During kart operation, beware of body or clothing contact with moving components of the kart.
Warning: Inspect any part prone to wear (tyres, bearings etc.) before each kart event for good condition,
in accordance with the directives of the kart manufacturer.
Warning: Keep to running-in procedure as directed.
Warning: Operate engine only within the specified limits.
Warning: Only get in and out of the kart if engine is not running.
Running In
This must be carried out on a track and not stationary as engine will overheat!
This is an important process which takes at least 75 minutes of track time. This is vital to ensure the long
term condition of the engine. You should divide your running in into five periods of 15 minutes.
0-15 minutes: Use minimal throttle starting at first around 4000rpm and do not exceed 5000rpm. Use the
throttle to power on and off during all of the running in periods. Do not hold engine at constant speed, but
vary up and down. Keep a careful eye on the temperature gauge. It is a good idea to put one or two pieces
of tank tape at the top across the full width of the radiator. If the gauge goes above 80C while running then
remove some tape immediately and make sure that the temperature then goes down. 65C – 70C (Standard
& Enduro Radiator) is ideal for the first three 15 minute periods.
At the end of this period check the kart and engine thoroughly. Ensure the engine has no leaks and check
the water coolant & oil level – oil must always be showing in the sight glass.
15-30 minutes: Build the revs up over this next 15 minutes to a maximum of 7000rpm again keeping an eye
on engine water temp. Check engine and tick over.
30-45 minutes: Build the revs up over this next 15 minutes to a maximum of 9000rpm using more throttle by
taking the power on and off & again keeping an eye on engine water temp Check engine and tick over.
45-60 minutes: Build the revs up over this next 15 minutes to a maximum of 10500rpm and use larger
amounts of throttle. By now you will almost certainly have dispensed with some tank tape and have the
engine running at around 70C – 80C with Standard Radiator or 60C – 65C with Enduro Radiator.
Check engine and tick over.
At this point carry out another thorough check to ensure oil level, water level, and to ensure that the kart is
fully ready for high speed use, including the tension of the chain which will have stretched with initial use.
(12mm up & down movement of chain is about correct tension)
60-75 minutes: Build the revs up over this next 15 minutes to a maximum of 11500rpm and use full throttle
and higher revs, though we recommend that you do not use extended high revs until the engine has done at
least a total of 1.5 hours running.
