UMS 5-55 cc User Manual page 6

Centre Line
2. Use Four steel screws (not included) to attach the engine mounting ring to the firewall.
The size of the mounting ring screws will vary depending on the aircraft. Always use the
largest size screw that will fit through the mounting ring.
To keep the engine from coming loose in flight:
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Firewall with blind nuts installed:
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Always use split washers between the mounting ring screws and the mounting ring.
Firewall with through bolts installed:
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Always use nylon locking nuts with bolts through the firewall.
3. Make sure the fuel tank is no farther than 200mm (8 in) from the back of the firewall.
Always use a fuel filter inside the fuel tank.
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We recommend using large (3.5mm) inner diameter fuel line.
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Make sure there are no sharp bends in the fuel line between the fuel tank and the
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engine.
4. Attach the throttle servo linkage to the throttle bellcrank on the engine.
5. Add your choice of activation mechanism (servo operated pushrod) for the choke lever.
6
Note : Install the tank on the centre line of the engine