VORTEX FACTORY: Via E. Fermi, 5 – 27040 Campospinoso (PV)– ITALY – Tel. +39 0385 765200
VORTEX FACTORY: Via E. Fermi, 5 – 27040 Campospinoso (PV)– ITALY – Tel. +39 0385 765200
OTK KART GROUP srl
Via dei Soprini, 16 – 25080 PREVALLE (Brescia) ITALY-‐Tel. +39 030 6804601 – Fax +39 030 6804698
Rev. 30/09/15
5. SERVICING YOUR ENGINE
Good maintenance is essential for safe, economical and trouble-‐free operation. Here you will find
a maintenance schedule, routine inspection procedures and very simple maintenance procedures
by using basic tools. Some service tasks that are more difficult or needs special tools must be
performed by Vortex technicians or qualified mechanics.
Timing schedule periods are only indicative.
5.1. Maintenance Schedule and Adjustments
Carburettor
Cleaning
After every race/heat
Throttle Cable
Check
Every race
Spark Plug
Check
Change
Every Race
After 30 hours
Exhaust
Internal
cleaning
Every 10 hours
Clutch
Check and cleaning
Change
Every 10 hours
After 30 hours
Piston
Change
After 30 hours
Chain
Change
After 10 hours
Cylinder
Honing
After 30 hours
Connecting Rod
Change
After 90 hours
Bottom End
Re-‐built
After 90 hours
5.2. Torque Chart
Cylinder Head Ø 8 mm Nut
kgm 1,8
Exhaust Manifold Ø 7 mm Nut
kgm 1,5
Crankcase Ø 6 mm Screws
kgm 1,2
Bendix cover Screws
kgm 0,8
Starter Gear Nut
kgm 6 (Use threadlocker)
Pinion Bell Ø 5 mm Screws
kgm 0,8
Ignition Nut
kgm 2,8
Pinion Bell Nut
kgm 2,8
Ignition Ø 5 mm Screws
kgm 0,8
Nylon crankshaft stuffer
kgm 0,8 (Use threadlocker)
5.3. Sizes and Measures
Tolerance Cylinder/piston
10,5
Timming
3mm
Piston Sizes
W240/MR01A
41,88