OHIO MODEL Products 120CC Yak SP-55M User Manual - page 14
6. The fuel tank is preassembled. Complete the installation in the fuselage using zip ties or velcro straps
to hold the tank in position. Connect a fuel line between the tank and carb, a fuel line between the tank
vent and the bottom of the fuselage, and a fill line to a fueling port which can be mounted on the fuselage
side opposite your ignition switch. Make sure your vent line does not come close to any hot exhaust part
such as the muffler or canister. OMP recommends the use of small zip ties or fuel line clamps to secure
the lines to the tank.
7. The Yak-55M comes with a finished tuned pipe tunnel with installed pipe mounts. The tunnel can
closed off to accept canisters of all sizes, stock mufflers, and inverted Pitts style mufflers. Follow the
manufacturer’s instructions for your exhaust system paying attention to vibration mounts if required and
air flow requirements. Trial fit your exhaust system now and work out any additional supports, but do not
permanently install the system until you fit the cowling in the next steps.
COWLING INSTALLATION:
1. Fit the cowling in place and make any cutouts necessary to clear your engine and exhaust components.
Trial fit and trim as necessary being careful and accurate. The open cowling louvers provide enough air
exit area to provide adequate air flow over the engine. Some modelers may prefer to build baffling in the
front of the cowling to assist air flow over the cylinders. This can be done using scrap pieces of balsa
trimmed to fit your engine installation. Be sure to fuel proof all exposed wood. When satisfied with the
final fit, attach the cowling to the fuselage using the six supplied screws and rubber washers screwed into
the cowl ring.
100 cc servo location
100 cc servo location
Fuel Dot
Location