TLDR;
This video provides a comprehensive guide to fully reassembling a Honda Shine engine. It covers everything from gearbox fitting and shaft assembly to cylinder and head installation, including valve timing and clutch assembly. The video also addresses common mistakes and provides tips for achieving optimal engine performance and sound.
- Gearbox and shaft assembly
- Cylinder and head installation
- Valve timing and clutch assembly
- Addressing common mistakes
Gearbox Assembly [0:00]
The video begins with an explanation of how to assemble the Honda Shine's gearbox. It identifies the input and output shafts, explaining their placement within the engine. The narrator demonstrates the correct order for installing the gears and washers on the shafts, emphasising the importance of proper alignment for smooth operation. He highlights that no grease is needed for the main components as they are designed to function without it.
Assembling the Gear Shafts [1:21]
The tutorial details the assembly of the gear shafts, starting with the installation of specific gears and circlips. The narrator stresses the correct orientation of these components to ensure proper functionality. He then moves on to the second shaft, again showing the precise order of gears, washers and circlips. The completed shafts are then meshed together to demonstrate how they interact and function within the gearbox.
Installing the Gearbox in the Engine Casing [4:02]
The video transitions to installing the assembled gearbox into the engine casing. The narrator carefully positions the gearbox, ensuring it sits correctly within the left side of the main chamber. He uses gentle taps to secure it in place, avoiding any forceful hammering.
Fitting the Shift Forks and Shafts [5:09]
The video explains the installation of the shift forks and their corresponding shafts. The narrator identifies the larger and smaller shift forks, guiding on their correct placement. He carefully aligns the forks with the gears, ensuring smooth shifting action.
Securing the Engine Casing [7:09]
The narrator fits the remaining engine casing, aligning it carefully with the already assembled components. He then installs and tightens the various bolts, noting the different sizes and their specific locations. He points out the importance of tightening the bolts evenly to ensure a secure and properly sealed engine casing.
Installing Bearing Locks [10:01]
The video details the installation of bearing locks, which secure the bearings in place. The narrator shows how to position the locks correctly, ensuring they properly hold the bearings. He then tightens the bolts that secure the locks, making sure they are snug but not overtightened.
Installing the Kick Start Mechanism [10:51]
The narrator moves on to installing the kick start mechanism, including the kick start shaft and spring. He explains how to correctly position the spring to ensure proper kick start function. He then demonstrates how to install the kick start lever, aligning it with the shaft and securing it in place.
Installing the Clutch Assembly [13:53]
The video guides through the installation of the clutch assembly, starting with the free wheel gear. The narrator shows the correct order for installing the washers and circlips. He then demonstrates how to install the clutch plates, alternating between friction and steel plates.
Installing the Camshaft and Cylinder Head [14:55]
The narrator explains the installation of the camshaft and cylinder head, emphasising the importance of correct timing. He aligns the timing marks on the camshaft and crankshaft to ensure proper valve timing. He then installs the cylinder head, tightening the bolts in a specific sequence to ensure even pressure.
Valve Installation and Rocker Arms [26:57]
The video details the installation of the valves, including the valve seals and springs. The narrator shows how to compress the valve springs and install the valve keepers. He then moves on to installing the rocker arms, ensuring they are properly aligned with the valves.
Timing Chain Installation [30:00]
The narrator explains the installation of the timing chain and its guides. He shows how to route the timing chain around the crankshaft and camshaft sprockets. He then installs the timing chain guides, which prevent the chain from rubbing against the engine casing.
Installing the Cylinder Head Cover and Setting the Timing [31:56]
The video guides through installing the cylinder head cover and setting the engine timing. The narrator aligns the timing marks on the camshaft sprocket with the marks on the cylinder head. He then tightens the bolts that secure the cylinder head cover, ensuring a proper seal.
Setting the Cam Timing [34:59]
The narrator explains how to set the cam timing, aligning the marks on the cam sprocket with those on the engine case. He emphasises the importance of ensuring the crankshaft keyway is pointing upwards. He also notes that slight adjustments can be made to fine-tune the timing.
Installing Tappet Covers [36:57]
The video details the installation of the tappet covers, ensuring a proper seal to prevent oil leaks.
Addressing Background Noise and Focus on the Task [38:30]
The narrator addresses the issue of background noise in the video, apologising for any distractions. He encourages viewers to focus on the task at hand and the steps being demonstrated, rather than the surrounding sounds.
Installing the Flywheel Cover [39:44]
The narrator installs the flywheel cover, aligning it properly with the engine casing.
Engine Sound Test and Final Remarks [40:42]
The video concludes with a sound test of the rebuilt engine. The narrator expresses satisfaction with the engine's smooth and quiet operation, attributing it to the new components installed. He reiterates the list of replaced parts, including the cylinder kit, timing chain, crank shaft, and clutch components.
