Subaru Robin EA190V - Manual (Page 44)

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Tools：Driver handle, Retainer assembler, Inner assembler
e) Oil seal：
 Apply oil to the circumference of an oil seal.
 Drive the oil seal in the cylinder barrel using following
tool.
Tools：Driver handle, Retainer assembler
 Apply the lubrication oil on, after reassembling.
f) Piston：
 Apply oil to the piston and cylinder
 Install the piston with the mark on the piston head opposite to the chain hole side.
② Piston check
Check the piston and cylinder for contacting, and check the groove for fault, piston top for burn and cracks.
If damaged, replace.
Clean the carbon deposit
Clean the deposit round the piston top and cylinder neck before checking, first soak the carbon
deposit with kerosene, and then clean with meter scraper or metal brush.
Piston loader
Chain hole
“↑”Mark
Driver handle
Retainer assembler
Oil seal