Subscribe to Our Youtube Channel
Related Manuals for Great Power Engine GP38
Summary of Contents for Great Power Engine GP38
- Page 1 INSTRUCTION MANUAL www.gpengine.world Updated: May 2020 Copyright © 2020 Great Power Engine Company. All rights reserved.
-
Page 2: Technical Specifications
PLEASE READ THESE INSTRUCTIONS CAREFULLY AND COMPLETELY BEFORE OPERATING THE ENGINE TECHNICAL SPECIFICATIONS Single-Cylinder GP38 Bore 38 mm RPM Range 1600-10000 RPM Net Weight 1038 g Output 5 Horsepower Ignition Weight 136 g Fuel Unleaded 89-93 Octane Fuel Pitts Muffler... - Page 3 40:1 Mixture of Octane Fuel and Synthetic Muffler Weight 200 g Lubrication GP123 V2 Bore 46.5 mm RPM Range 1500-8900 RPM Net Weight 2300 g Output 12 Horsepower Ignition Weight 202 g Fuel Unleaded 89-93 Octane Fuel 40:1 Mixture of Octane Fuel and Synthetic Muffler Weight 330 g Lubrication...
-
Page 4: Safety Instructions
It is vital to follow these safety instructions in order to prevent misuse of this engine that could result in severe harm to yourself or others. Great Power Engine Company does not take any responsibility for loss, damage, injury and/or death. In no event shall Great Power Engine Company be liable to the customers for special, incidental or consequential damages and injuries (including damages or loss of the third parties’... - Page 5 are dangerous. Smoking near the fuel supply or engine can lead to serious consequences. Fuel must be stored in an approved container in well-ventilated areas. 17. The engine temperature will be very high when/after running. Do not touch or refuel the engine until it cools down.
- Page 6 Engine Recommended Propeller Note Two-Blades 19x10, 20x8, 20x9 GP61 is designed for a maximum power of 10000 GP38 RPM. We recommend that you not use propellers that Three-Blade 18x10, 19x11 Narrow will exceed 9200 RPM during ground running. Two-Blades GP61 is designed for a maximum power of 8900 22×12, 23×10, 24×8, 24×10...
-
Page 7: Engine Installation
machines and therefore must not be used. Do not use mixed fuel that is more than 90 days old. GP does not take responsibility for any damage resulted from using low-quality fuel. ENGINE INSTALLATION Screw: You can directly mount the engine on the firewall. We recommend M6 screws for your GP engine. - Page 8 Turn both high and low needles clockwise gently until they stop. Do not over tighten the needles. Step 2: Turn both high and low needles counter-clockwise to regulated points. The general starting points of needles are as follows. Engine Low Needle High Needle GP38 open 1 ½ open GP61 1 ½ open 1 ½ open GP76 1¾...
-
Page 9: Starting Procedure
Symptoms of Running Rich When an engine is running rich, the fuel-to-air ratio is off because the carburetor is delivering too much gasoline. (1) Signs that high needle is too rich include sluggish performance, excessive amount of smoke from exhaust, engine stalling on acceleration. (2) Signs that low needle is too rich include engine easily overflowing at starting procedure and slow throttle response between low and mid-range RPM. -
Page 10: Toubleshooting
(c) Close the throttle to idle position and follow the starting procedure again. (d) For single-cylinder engines (GP38, GP61 and GP88), you can unscrew spark plugs to check contacts, and dry or replace them. Further starting must be done with the throttle turned down. -
Page 11: Maintenance
The following chart lists the sizes of screws and their torque values. Parts Engine Screws Torque Value Spark Plug All Engines 100 in-lbs Hub Screw All Engines Customized 250~280 in-lbs GP38 M5x18 GP61 M5×20 Crankcase Bolts 90~100 in-lbs GP76 M5×20 GP88 M5×18... -
Page 12: Limited Warranty
GP123 M5×30 GP178 M5×25 GP38 M5×16 90 in-lbs Cylinder Base Bolts GP61 M5×16 GP76 M5×16 90 in-lbs GP123 M5×16 Cylinder Base Bolts GP88 M5×18 90~100 in-lbs GP178 M5×20 GP38 M5×65 GP61 M5×50 GP76 M5×75 Carburetor Mount Bolts 70 in-lbs GP88 M5×45... - Page 13 Great Power Engine’s products are warranted against defects in materials and workmanship for a period of TWO (2) YEARS from the date of original purchase and from authorized dealers of Great Power Engine. Under this warranty, you will be able to file a warranty claim for your GP products.
Need help?
Do you have a question about the GP38 and is the answer not in the manual?
Questions and answers