| 摘要 |
PROBLEM TO BE SOLVED: To enhance certainty of operation, durability and operability of a height adjustment mechanism of a walking lawn mower.SOLUTION: The walking lawn mower 10 includes a height adjustment mechanism 20 for adjusting the ground height of a housing 11. The height adjustment mechanism comprises a front wheel support member 21L and a rear wheel support member 22L vertically swingably mounted to the housing, a connection member 25 for interlockably connecting the front and rear wheel support members to each other, and a lock mechanism 50 for restricting and releasing the displacement in a longitudinal direction of the connection member. The lock mechanism comprises a plurality of engagement grooves 51 arranged on the connection member in one row at front and rear sides, a lock pin 52 capable of being selectively engaged with one of the plurality of engagement grooves, a pin guide part 53 for guiding the lock pin relative to one of the plurality of engagement grooves so as to be put in/out, and an operation member 54 for sliding/operating the lock pin. |
