Zenoah G38 Manual - Free PDF Download

Page 2 - Table of Contents

2 Table of Contents Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 Safety Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ....

Page 5 - Mounting the Engine; Starting the Engine—Aircraft; Operation

5 Mounting the Engine Make sure the engine is mounted on the aircraft usingaircraft grade plywood that’s at least 6mm in thicknessfor the G26 engine, and 10mm in thickness for the G38through GT80 twin, or a mount of equivalent strength.Make sure it’s firmly mounted with 4 bolts. 1. Be sure to set fl...

Page 6 - Stopping the Engine

6 Operation (continued) 8. Quickly flip the propeller in a counterclockwisedirection according to the procedure described inthe note above. 9. The engine should start after a few flips of thepropeller. 10. Be sure to open the choke when the initial firingof the engine is heard. 11. When the choke is...

Page 7 - Recommendations; Disassembly; Engine Care and Maintenance

7 Operation (continued) High-Speed Needle: Turning this needle clockwise makes the gas mixture leaner, and turning it counter-clockwise makes it richer. Set this needle at a positionwhich is 1/4 open from the maximum rpm position whilethe aircraft is on the ground. Note: Do not tighten the high and ...

Page 9 - Maintenance Chart

9 Engine Care and Maintenance (continued) Items Leakage, Damage/Crack Losing Speed Air-cleaner (PUH) Spark Plug (gap) Cylinder (barrel) Piston, Ring Muffler & Bolt Bearings Crankshaft Rotor Propeller Hub (PU) Water Jacket (PUM) Action Check Check/Adjust Check/Cleaning Check/Adjust Check/Cleaning...

Page 10 - Maintenance Specifications

10 Items Bore (mm) Diameter (mm) Piston Ring Groove Width (mm) Piston Ring Hole (mm) Clearance between Piston and Cylinder (mm) Clearance between Groove and Piston Ring (mm) End Gap (mm) Width (mm) Eccentricity (mm) Axial Play (mm) Main Bearing Measuring Device Eye Checking Micro Meter Thickness Gau...

Page 11 - Troubleshooting Guide for Gasoline Engines

11 Troubleshooting Guide for Gasoline Engines a) The engine does not start. The crankshaftdoes not rotate Seizure, intrusion of a foreign substance The fuel has not been fed tothe carburetor The fuel has been fed to thecarburetor The Stop switch hasbeen turned off Wiring is disconnected Disassemble ...

Page 12 - Propeller Chart

12 Propeller Chart Troubleshooting Guide for Gasoline Engines (continued) In the event that none of the above procedures result in the engine running properly, contact our servicedepartment for suggestions at: Horizon Hobby, Inc.4105 Fieldstone RoadChampaign, IL 61822Phone: 217-355-9511 (M–F 8:00–5:...

Page 13 - Engine Specifications

13 Engine Specifications Items G26A G26M G231 HELI G231 MARINE G38 G45 G62 GT80 G26H 139mm 139mm 139mm 142mm 142mm 170mm 152mm 162.5mm 191.5mm 105mm 105mm 105mm 105mm 105mm 130mm 130mm 140mm 257mm 181mm 181mm 181mm 181mm 181mm 215mm 185mm 185mm 190mm 2,000 –10,000 2,000 –10,000 2,000 –10,000 3,000 –...

Page 14 - Exploded Illustration

14 14 Exploded Illustration G26/G231 Key # Zen Part # HH Part # Description G260 G260 G260 G231 G231 PU PUM PUH PUM PUH 1-1 T2075-12110 ZEN2601 CYLINDER 1 – 1 – – 1- 2 T2077-12110 ZEN2301RC CYLINDER – – – – 1 2-1 T2076-12110 ZEN2601M CYLINDER – 1 – – – 2-2 T2078-12110 ZEN23102M CYLINDER – – – 1 – 3 ...

Page 20 - Warranty Information; Warranty Repairs

20 Warranty Information Zenoah ® engines are guaranteed against workmanship and manufacturing defects for a period of 3 years fromthe original date of purchase. This warranty is limited tothe original purchaser and is not transferable. Warranty repairs will not cover: • Normal engine wear • Damage d...

Page 21 - Registration Form

21 Warranty Information (continued) Engine Type: ________________________________________________________________________________ Date of Purchase: ______________________________________________________________________________ Owner’s Name: ___________________________________________________________...