OKMO R90S 3.2CC Mini Motorcycle 2-Cylinder Four-Stroke Gasoline Internal Combustion Engine Model
Product Features:
The horizontally arranged cylinder block enables the cylinders to clear the obstacle structures near
the motorcycle’s front wheels while achieving excellent air-cooling performance.
The two symmetrically placed exhaust pipes are also one of the hallmark features of a horizontally opposed engine.
Thanks to the inherent advantages of its ingenious structural design, every component of the model strictly
replicates real mechanical principles, allowing this all-metal engine model to start smoothly and operate stably.
The entire engine is manufactured with precision casting technology, and all types of components are meticulously crafted
— the contours of the cylinder and other cast parts are particularly smooth and sleek.
This engine model perfectly reproduces the iconic characteristics of motorcycles from that era,
bringing you the unique charm generated by the mechanical operation of the engine.
Product Specifications:
Model: R90S
Material: Brass + Stainless Steel + Wood
Color: Brass
Displacement: 3.2 CC
Bore: 13 mm (0.51 in)
Stroke: 12 mm (0.47 in)
Cooling Method: Air-cooled
Starting Method: Electric Drill Start / Manual Start
Power Supply: 4.5V (3 AA Batteries, Not Included)
Fuel Grade: 95# Gasoline
Product Dimensions: 150×132×127mm (5.91×5.20×5.00in)
Product Weight: 1760 g
Package Contents: 1× Engine + 1× Electric Drill Connecting Rod (Starter Rod) + 1× Spare Parts + 1× Instruction Manual
Packaging: Box
Engine Starting Steps
1.Check the engine wiring on the wooden base,connect the fuel tank oil pipe,and install 3AA batteries(rated voltage: 4.5V).
2.Fill the fuel tank with 95#gasoline.Rotate the flywheel clockwise several times on the right side of the engine(the side where the
power switch is located),
allowing the mixed fuel to fully enter the cylinder and ensuring no air is trapped in the oil pipe.
3.Turn on the power switch,then quickly rotate the flywheel clockwise on the right side of the engine(the side where the power switch is located)to start the engine.
Notes
1.If the engine fails to start normally despite proper ignition and cylinder compression,
it is highly likely that the carburetor needle valve needs adjustment.
2.Tighten the main needle valve of the carburetor fully, then loosen it by a quarter turn,
and rotate the flywheel afterward to achieve the optimal air-fuel ratio for normal operation.
3.Turn off the power switch when stopping the engine.
Shipping & Service
Free shipping with parcel tracking.
Secure cardboard packaging for delicate metal components.
30-day return policy, provided the goods are in their original packaging.
In accordance with international shipping regulations, the shipment is subject to the customs laws of the destination country.
Import duties and value-added tax may apply. (Delayed payment may result in the goods being returned or destroyed.)
All incurred costs shall be borne by the recipient, who is also responsible for customs clearance.
Please check the applicable customs duty rates and regulations with your local customs authority prior to purchase.