Presentation on theme: "Model 12 Intek Horizontal OHV Head Removal and Replacement Lab #5."— Presentation transcript:
Model 12 Intek Horizontal OHV Head Removal and Replacement Lab #5
Customer Education Required Tools 7, 8, 10 mm socket 5/8” sparkplug socket Ratchet wrench Extension Inch pound torque wrench 5/8” box wrench 1/8” Allen wrench Feeler gauge set Standard screwdriver Pliers Optional T-30 Torx bit
Customer Education Systematic Approach Technicians need to take their time when disassembling an engine. This is not a race! Listen for instruction when to remove the next piece. Do not work ahead! Lay assemblies in order as they were removed. Put fasteners with removed assemblies, or loosely back in bolt holes.
Customer Education Let’s Begin Close fuel shut-off valve Disconnect spark plug ignition lead from spark plug Move throttle to stop position
Customer Education Remove Carburetor Per Lab#2 Instructions Use written instructions
Customer Education Remove Fuel Tank Per Lab#4 Instructions Use written instructions
Customer Education Remove Muffler Heat Shield Use 7 & 10 mm sockets Use caution! Sheet metal edges can be sharp!
Customer Education Remove Muffler Use 10 mm socket or T- 30 Torx bit Exhaust gasket will probably be damaged during removal Remove sparkplug using sparkplug socket
Customer Education Valve Cover Bolts Make drawing of bolt locations Indicate size and color of bolt
Customer Education Remove Valve Cover Use 10 mm Socket Check gasket for damage
Customer Education Governor Control Panel Use 10 mm socket Loosen the 4 black bolts. Turn the bolts about ¾ of the way out, but do not remove
Customer Education Remove Cylinder Heat Shield Use 7 mm socket While lifting up on governor control bracket, work shield out from engine
Customer Education Remove Spark Plug Move throttle control to the stop position Use 5/8" spark plug socket
Customer Education Observe Valve Movement Pull on starter rope through all 4 strokes Observe movement of both valves
Customer Education Measure Valve Clearance Bring piston to just past TDC on compression stroke Exhaust clearance Intake clearance Measure between rocker arm and valve stem cap
Customer Education Loosen Rocker Arm and Jam Screw Use 5/8" wrench and 1/8" Allen wrench Only need to loosen both pieces about ¼ turn Turn both rocker arms to the side and remove push rods
Customer Education Remove Cylinder Head Use 10 mm socket Cylinder head gasket will probably be damaged during removal Valve assemblies can be removed from head
Customer Education Piston Movement Pull on recoil rope Observe piston movement in cylinder
Customer Education Reassembly Technicians need to take their time when reassembling an engine. This is not a race! Listen for instruction when to add the next piece. Do not work ahead! Fasteners will need the proper torque values. Special procedures will be explained.
Customer Education Install Head Gasket 4 holes on head gasket need to be on intake side.
Customer Education Install Cylinder Head Use a 10 mm socket Step-Torque sequence in. lbs Install push rods in slots –Insure that tips rest in recess of tappets
Customer Education Adjust Valve Lash Piston needs to be at ¼" past TDC Install valve caps on valve stems Properly orientate rocker arms Intake valve Exhaust valve
Customer Education Install Valve Cover Check gasket Short screw on top, gold screw on bottom, silver screws on sides Use 10 mm socket Torque to 45 in. lbs
Customer Education Install Cylinder Heat Shield Use 7 mm socket While lifting up on governor control bracket, work shield back into place Torque to 30 in. lbs DO NOT OVER TORQUE! Will strip hole, causing replacement of cylinder
Customer Education Governor Control Panel Use 10 mm socket Tighten to 60 in. lbs
Customer Education Install Muffler Replace gasket? Use 10 mm socket or T-30 Torx bit Torque to 100 in. lbs
Customer Education Install Muffler Heat Shield Use 7 and 10 mm socket Torque 7 mm to 30 in. lbs – Tighten these screws first Torque 10 mm to 60 in. lbs
Customer Education Install Spark Plug Use 5/8" spark plug socket Torque to 180 in. lbs Attach ignition lead
Customer Education Install Fuel Tank Per Lab#4 Instructions Use written instructions
Customer Education Install Carburetor Per Lab#2 Instructions Use written instructions
Customer Education Success! Do you have any extra parts? Do you have any questions?