- help with OS FX 1.60
- OS.65 LA fuel leak-help?
- OS SX-H Hyper Blowing glow plugs
- I can't find a con rod for my CZ.
- OS .25 AX
- Upgrade for a OS Max 60FP
- OS 91 surpass cam bearing removal
- Kano Sili Kroil with Silicone
- OS 50SX-H Non Hyper
- OS SX-H Hyper
- 1.08 FSR
- OS 10 Question
- O.S 18 tz pilot nut??
- O.S. 1.08 prop
- OS 48 4s question....
- OS 7D Carb.
- OS GT33 shaft dia 8mm vs 10mm prop hole
- OSFxi 46
- Parts needed for non surpass OS120fs HELP
- OS 120 Surpass Ver. 1 valve clearance
- I need help with my OS GT 33 installing it into 27% EDGE 540
- tuning v series OS 92 4 stroke
- OS Max FS 62V Four Stroke
- Old OS61 SE pattern engine
- os 55 ax
- Delete
- MOVED: OS 61FX Piston/Sleeve
- "New" OS 55AX ???
- Four stroke glow plug
- "O" rings for the pushrod tubes?
- fr5-300 oil vs fr7-420
- MOVED: OS .60 SR muffler
- OS FX 91 carb swap
- OS 65AX Cover Plate Gasket ???????
- OS Rear Bearings Wanted
- GT60
- O.S. 21VG(P) roto-start question???
- After Run Oil and LA Engines
- Mid 90's OS FS120 Surpass Break In
- FT-240 / FT-300 Connecting Rod
- OS52FS Idle Adjust
- Oil content in gas and glow??
- OS 1.08
- OS 155 P
- MOVED: OS GT 33 GAS ENGINE
- OS TWIN FT 120 GEMINI CAM TIMING
- OS TWIN FT 120 GEMINI CAM SETTINGS
- OS 95 Help
- OS 75AX rebuild- question for Bax
- 55AX mid throttle issues, fixed I think
- After Run Oil into a 4 Stroke
- O.S. Gemini 120 twin
- OS 95V FS Prop Choice
- Engine Mount dimensions needed for OS FS 155-a
- Problems with O.S. 91 Surpass II w/pump
- 55 ax: Bubbles? Help Diagnose, Please!
- OS Surpass 91
- Stripped back plate threads
- 120 Surpass won't Start after rebuild
- FS-120 Connecting Rod
- After-Run Oil Chemical Question
- 55 ax enough power?
- front seal drips
- O.S. .25 SF (circa '92) Manual or Part # Needed
- inverted four stroke
- Bad O-Rings on two 61FX Engines.
- 1.20 AX
- os 46AX II Carburetor
- Engine Information
- OS FS-60 Carb
- Inverted OS 91 4 Stroke Surging
- OS 46AX Shaft Play
- OS .91FS Surpass I back plate
- OS70s throttle arm ring disconnect
- os46AX high speed needle
- MOVED: O.S. GT33 Muffler
- Purchase GT gas engines without mufflers?
- OS 91 FS Muffler
- OS FS-90 NON SURPASS UNKNOWN PARTS
- OS MAX .25 carb/throttle action
- OS FS 70 Ultimate
- OS 55AX Noisy
- OS91 4 Stroke Compession
- Unrun .75 AX
- OS 110 driveshaft slop
- OS120AX quit & wouldn't restart
- HELP RE: OS 40 FP NEEDLE VALVE ASSEMBLY
- AX Motors in general
- OS 120 AX and black exhaust oil
- OS 91 Surpass valve keeper?
- OS 40 FSR
- Is this an older OS Carburetor ?
- FS-120S II
- os la 40 WILL NOT stay running
- OS .40 FP
- O.S. 61 SF
- OS 81a
- OS GT33 spark plug gap
- 55 AX low needle setting
- OSMG 2854 Muffler for FS.26
- 1978 os 90 fsr rebuiold questions
- OS 46 rear bearing replacement
- Prop Nut Loosens
- Help to ID OS Cylinder Head ?
- os max 25 part #s and rebuild info
- 75 ax dies out
- 75 ax dies out at mid range
- OS 35 AX Breakin
- OS FS-120 Series 1
- peeling sleeve on 75ax
- O.S. 1.60 Gemini Disassembly
- O.F 25 F
- Powerbox Muffler and OS 61FX
- OS .21 TM Engine
- MOVED: OS fs 70 Surpass
- OS FS.52 Surpass / Pitts Muffler
- 91 FS tuning problem
- OS 65AX & exhaust length
- 120 surpass II pumped
- OS 90FS parts needed
- Fuel valve for OS 120
- O.S. .40 FP piston/liner
- O.S 120 AX cooling question
- What Engine Size
- OS 15FP Prop Nut
- TDC Pinch getting "worse"?
- BX-1 (1.08 FSR?) drive washer needed
- OS 40 SF
- OS .91 problem
- OS FS-120S-E
- ENGINE STORAGE QUESTION PLEASE.
- FS-120III Disassembly
- OS Wankel 30's
- OS .91 FX Over heating Problem
- Fuel tube size for 95AX and 1.20AX
- OS 46 FX
- OS 55AX and pitts muffler
- OS FS200- Carbi Reversal Issue
- 120 4 stroke
- cylinder head 50 heli
- OS Max Muffler Replacement
- OS 120AX
- FS-200S-P Leaking Pressure Regulator
- OS FT-160 Choke assembly pad
- O.S.61SF
- How to disassemble O.S. 140 RX
- FS120 Surpass III Question
- OS FSA 110 Problem
- 1.08 Carb
- 2 OS fs.91 mufflers with worn threads-Problem & fix?
- FT-160 Twin in Vario Boxer Heli
- MOVED: Need OS SF "P" 61 Engine Box
- O.S. 1984 FS-120 Before Surpass ( Looks like a Saito)
- MOVED: 1984 O.S. FS-120 (Before Surpass)
- OS 55ax
- Nozzle assemblies for 40FP and 25FP
- OS61SF ABC Pumped Won't Idle
- Muffler nut size for OS 46LA stock muffler
- OS95 AX vs OS120AX
- pump for OS 91 fx
- OS 61 Heli - Aircraft ?
- OS 40 VR-P Cylinder head
- OS .95V In-Cowl Exhaust Header Pipe
- servicing 120 Surpass III pump
- a 61fx thing
- .65LA preset for airbleed
- Klotz oil
- O.S. .91 surpass II not reaching top RPM
- OS 60 with Perry carb and pump, help!
- .46 LA Muffler on .46 AX
- OS FS120 Surpass-E or FS110a
- O.S. 91 Surpass - New - loads up/stops
- BGX3500 prop and cone
- OLd OS 25 max
- NEEDle valve bracket, remote setup BGX
- st-15 engine replacement
- OS 120 lll Pump
- os FS-120 surpass
- Problem with FS91SII
- FT-120 Gemini II
- OS MAX 15 fuel consumption
- OS FS-200 distance to engine
- up side down
- OS81 FSa Pumped Main needle sensitivity
- os 55 ax connecting rod problem
- Head Bolts on 75 ax
- OS fs 48 Surpass running problem
- Will an OS 46FX piston/liner fit an OS 40FX engine?
- OS Max .61FX Muffler
- MOVED: 21204310 .12 buggy head???
- OS FL70 front bearing removal
- OS Exhaust Headers
- MOVED: OS 120 Surpass 2, where do I get spares?
- Engine getting too hot
- OS 91 FS Pump not pulling fuel. Help?
- motor mount problem
- OS 46 FX Question for Bax.
- os 55 ax carburetor
- OS FS110a Low rpms ?
- os fs-48 Surpass my first 4 stroker tear down
- OS SX 50 H-ring...little help please..
- BAX 95AX question
- OS 61 FX
- OS 120 Surpass FS Series
- CV Technology
- 61fx or 75fx
- Lower Pitched Prop on OS 46FX
- Difference between OS E-3020 and E-3070 Silencer
- Pumped OS FS-91 surges at full throttle
- OS 70 Surpass
- FX-25 vs AX-25
- OLDER OS FS 90/91 METAL THROTTLE ARM
- O.S. 1.20 FS Surpass III
- O.S. 1.60FX Pusher
- OS 46SF low end needle setting
- .46AX frame size
- help id this OS engine heatsink
- o.s .25xz break in procedure
- OS 120 head replacement
- OS FS120 SE head question
- Fs 90 bearing replacement
- OS .10 Piston Pin
- error
- 46 AX engine
- OS .18TM Piston "damage?"
- OS 15CV-X - ticking noise
- OS 1.08 Tuning
- older os 91 fx intregal backplate mounted nva
- OS 18tm questions
- MOVED: OS FS-90 Manual
- Pullstart motor with non-pullstart flywheel
- Manual needed
- Os 55ax midrange problem
- OS 46 AX knock
- older os 40fs
- Flexible Exhaust pipes
- OS Max 60 FP Needle Valve
- OS 4 stroke muffler extension ?
- OS 91FX tunning problem
- OS 120FSIII gasket
- Old O.S. FS90
- OS FSa-155-P 4 stroke. When?
- OS 108
- FS-120S III-P CRANKSHAFT PROBLEM
- OS FS 91SII w/ pump question
- OS FX 160 lean
- OS 52 Exhaust Pipe
- OS FS - .91 Surpass II Muffler Inlet Pipe Breakage
- OS 110a Pitts!
- OS 4 stroke 110 prop